Road map and winding mechanism therefor



May 25 Q 14926. l J ,.l. E. MANN ROAD MAP AND WINDINGMECHANISM THEREFORFiled Feb. 16

raiser-ed Mey 25,1926.

Unirse stares PATE JOHN n. MANN, or ,snonoiirsir WAsHiNGToN. i

ROAD MAP AND WINDING MEGHANISM THEBEFOR.

i Application ilcd February lThis invention relates to improvements inroad maps and winding mechanism therefor; more particularly toVmechanism of that character especially designed for at* tachinent tothe instrument board of an automobile and wherein the map is made up instrip form and is adapted to be wound on rollers and to be advanced, asrequired, beneath a glazed opening inthe housing.

The principal object of this invention resides in the provision of adevice of the above ystated character 4wherein there are p -lelrelationwithin the housing are two rolltwo map mounting rollers from andonto which the inap may be wound and which are both operable froin'tliesame drive wheel, through a novel driving mechanism which provides fordriving` only the roller on which the map is being wound and withoutdriving the other roller, thus avoiding the diliculty that wouldotherwise be eX- perienced on account of the variation in sizes of thetwo rolls as the map is wound back and forth. Y Y f In .accomplishingthese and other objects of the invention, I have provided the iinproveddetails of construction, the preferred forms of which are illustrated intheaccompanying drawings, whereiny Figure 1 is a front elevation of aroad map housing and winding mechanism em-v bodied by the presentinvention.

Figure 2 is a sectional view of the saineV particularly illust-ratingthe mounting of the map on the two winding rollers, and the meanswherebythey are driven.

Figure 3j is a sectional view taken just within tlieside wallsubstantially on'the line 3-3 of Figure 2. l

Figure 4 is an end view lof one of the rollers and its winding wheel;showing the pawl carried by the latter and the notch inv the roller forreceiving the pawl.

Referring more in detail to the drawings- 1 designates, in its entirety,a` housing in which the road map and winding mechanism is contained andcomprising a back wall 2 having upper and lower end portions 3 extendedbeyond the ends of the housing' and provided with openings 4 .forreceiv-v ing screws or bolts 5 whereby it may be mounted on theinstrument board of an automobile or similar vehicle., The left handside of the housingisk closed byv a wall 6 cast integrally witl'i theback and upper and lower end walls 7 and 8 respectively, and

the opposite side is closed by a removable 1e, 1925.y serial Nb. 9,1609.

door 9 provided at its lower edgewith a rib 10 adapted to seat within agroove 11 yin the edge of the base wall and having af clip 12 lined toitsupper end for engagement with astop orslioulder 13 on the top `wallto rthereby hold-the door in piace;

rlhe front ofthe housing is closed by a Vwall lei provided with anelongated opening 15* in which a transparent panel 16 of glass or othersuitable material is litted'and thronghwhich the'i'nap may be observedLocatedin vertically spaced apart, paralers 17 kand 18 onA which theinapstrip or web 19 is wound. rlhese rollers have trunnions 2O at their endsfreely rotatable in openings 21 in the side walls@ and 9 and have slots22 formed longitudinally in their central portions for receiving theends of the yweb so as to prevent .it slipping durino a windingoperation. There are also two small guide rollers 23 and 24 mounted in asimilar manner-between the side walls closely to the upperl and lowerends of the opening 15 over which the strip is guided whilel being woundfrom one roller to the other and which vsupport the web closely to theglazed panel where it can be easily seen. v

The means which I have provided for winding the strip back and forthbetween the rollers comprises a wheel 26 that is fired on the inner endof a. short shaft 27, that is extended f rotatably through a bearin y'opening 28 in the side wall 6 vat a point midway of the ends of rollers17 and 18 and which has a winding cranlrl) fixed to itsV outer'end.Mounted rotatably on the ends of rollers 17 and 18 and frictionallyengag- Ving the upper and lower edges of wheel 26 are relatively smallwheels 30 `and 31, each of which has a pawl 32pivotally fixed to itsouter face and adapted to be pressed by springs 83 into notches 34formed in the rollers so as to provide a one way driving connectionbetween the wheels and their rollers; the pawl being so arranged thattheyk will effect the winding ofthe web onto the rollers but will permitthe wheels to rotate freely ony the yrollers where it is ybeing unwoundtherefrom.

It is intended that the inap strip be made of a transparentersemitransparent matef rial and that an electric light, as designatedllt) at 36, be located on the' base within the teasing; and previas?.with rentner Si which will cause the strip to be illuminated so that thenlap may be easily seen at night.

It is the intention, to provide road maps in strip form either fromphotographs taken from an aeroplane or from surveyors maps and to laythem out to an exact scale so that, if it is so desired, a mechanicalmeans' may be used to operate the Winding mechanism. Such would consist,preferably, of a gear Wheel l ixed to the shaft 2T and adapted to bedriven, after removal of crank 29, by connection with a Wheel of thevehicle or from the speedometer by a driving gear and shaft asdesignated at il in Figure l.

It is readily apparent that devices ol this character could be made upin various sizes, shapes and in designs suitable for different vehicles,and that various details ot construction could be made 1withoutdeparting from the spirit of the invention. it may be desirable to usetoothed gears in place ot the smooth surfaced wheels 26, and 3l.

Having thus described my invention, what I claim as nenv therein anddesire to secure by Letters-Patent, is:

l. A device ot the character described, comprising a housing providedWith a front opening, a pair ot' rollers mounted in the housing on Whicha strip may be Wound and advanced from one to the other closely beneathsaid opening; said rollers having pawl receiving notches therein, awinding` shaft rotatably mounted in a side Wall of the housing, a Wheellined on the inner end oi said shaft, a crank fixed to the outer endthereot', Winding` wheels rotatably mounted on said rollers intrictional driviiig contact with said Wheel, pawls pivotally fixed to'said winding` wheels and engageable with the rollers to effect aWinding connection, but permitting 'free rotation ot' the wheel on theroller from which the strip is being un- Wound.

i2. A device of the character described coniprising,` a housing`provided with a Vl'ront opening, a pair of rollers mounted in thehousing on which a strip may be wound and advanced from one to the otherclosely bcneath said opening; said rollers having paul receiving notchestherein, a Winding' shattrotatably mounted in a side wall ot thehousing, a Wheel liizcd en the inner con or said shai't, a crank lixedto the outer end thereof', Winding wheels rotatably mounted on saidrollers in l'rictional driving` Contact with said wheel, parvispivotally fixed to said winding' wheels and engagcable with lthe notchesot' the rollers to clcc a winding' connection, but 'permitting treerotation of the Wheel on the roller fromv which the strip is beinguntvound and a lamp located in the housing to illuminate the stripbeneath said opening.

Signed at Everett, Snohomish County, lVashington, this 23rd day ofJanuary 1925.

JHN E. MANN.

